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Methods and apparatus for identifying disease status using biomarkers

a biomarker and disease status technology, applied in the field of methods and apparatus, can solve the problems of ignoring all information, less accurate diagnosis of a disease state than integrating multiple biomarkers, and limited application of methods to determine a variety of disease statuses in subjects. to achieve the effect of facilitating the determination of the disease status of an individual

Inactive Publication Date: 2011-03-31
PROVISTA DIAGNOSTICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]Methods and apparatus for identifying disease status according to various aspects of the present invention include analyzing the levels of one or more biomarkers. The methods and apparatus may use biomarker data for a condition-positive cohort and a condition-negative cohort and automatically select multiple relevant biomarkers from the plurality of biomarkers. The system may automatically generate a statistical model for determining the disease status according to differences between the biomarker data for the relevant biomarkers of the respective cohorts. The methods and apparatus may also facilitate ascertaining the disease status of an individual by producing a composite score for an individual patient and comparing the patient's composite score to one or more thresholds for identifying potential disease status.

Problems solved by technology

While conventional methods have produced clinically useful biomarkers, their application to determining a variety of disease statuses in subjects is limited for at least five reasons.
Second, traditional methods rely on the analysis of a single biomarker to indicate a disease state.
Instead of integrating multiple statistically significant markers, single marker models rely on the ideal (or nearly ideal) performance of a single marker, which may result in a less accurate diagnosis of a disease state than integrating multiple biomarkers.
Third, conventional methods rely exclusively on large differences between disease-negative and disease-positive populations, and disregard all information when the distributions of the disease-negative and disease-positive populations overlap to any significant degree.
Fourth, the traditional single marker methods are often confounded by biodiversity and the presence of sub-groups in the disease-negative or disease-positive populations.
Finally, despite increasing understanding of biomarkers and availability of convenient biomarker assays (e.g., immunohistochemistry assays) to detect and quantify expression of specific biomarkers associated with a disease, traditional analyses often fail to sufficiently differentiate the disease-negative and disease-positive statuses to permit reliable diagnosis of diseases.

Method used

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  • Methods and apparatus for identifying disease status using biomarkers
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  • Methods and apparatus for identifying disease status using biomarkers

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Embodiment Construction

[0021]The present invention is described partly in terms of functional components and various processing steps. Such functional components and processing steps may be realized by any number of components, operations and techniques configured to perform the specified functions and achieve the various results. For example, the present invention may employ various biological samples, biomarkers, elements, materials, computers, data sources, storage systems and media, information gathering techniques and processes, data processing criteria, statistical analyses, regression analyses and the like, which may carry out a variety of functions. In addition, although the invention is described in the medical diagnosis context, the present invention may be practiced in conjunction with any number of applications, environments and data analyses; the systems described are merely exemplary applications for the invention.

[0022]Methods and apparatus for analyzing biomarker information according to v...

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PUM

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Abstract

Methods and apparatus for identifying disease status according to various aspects of the present invention include analyzing the levels of one or more biomarkers. The methods and apparatus may use biomarker data for a condition-positive cohort and a condition-negative cohort and select multiple relevant biomarkers from the plurality of biomarkers. The system may generate a statistical model for determining the disease status according to differences between the biomarker data for the relevant biomarkers of the respective cohorts. The methods and apparatus may also facilitate ascertaining the disease status of an individual by producing a composite score for an individual patient and comparing the patient's composite score to one or more thresholds for identifying potential disease status.

Description

FIELD OF THE INVENTION[0001]The invention relates generally to methods and apparatus for identifying disease status in a patient, and more particularly to identifying disease status in a patient according to levels of one or more biomarkers.BACKGROUND OF THE INVENTION[0002]Biomarkers are used in medicine to help diagnose or determine the presence, absence, status and / or stage of particular diseases. Diagnostically useful biomarkers have been identified using measured levels of a single biomarker obtained from a statistically significant number of disease-negative and disease-positive subjects in a population and establishing a mean and a standard deviation for the disease negative and positive states. If the measured biomarker concentrations for the disease-positive and -negative states were found to have widely separated Gaussian or nearly Gaussian distributions, the biomarker was considered useful for predicting instances of the disease. Subsequent patients could be considered dis...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06G7/60G16B25/10G16B40/00
CPCG01N33/574G01N33/57411G01N33/57415G01N33/57438G06F19/345G01N33/57449G01N33/57484G06F19/20G06F19/24G01N33/57442G16H50/20G16B25/00G16B40/00G16B25/10G16H70/60G16H10/40
Inventor GRIMES, F. RANDALL
Owner PROVISTA DIAGNOSTICS INC
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